文献类型：期刊文献

中文题名：用于活性组分分布在颗粒表层的催化剂评价的等温积分反应器

英文题名：ISOTHERMAL INTEGRAL REACTOR FOR EVALUATING CATALYST WITH ACTIVE CONSTITUENT MALDISTRIBUTION

作者：何文军[1];徐佩若[1];朱炳辰[1];潘银珍[1]

机构：[1]华东理工大学化学工程系,上海200237

年份：2001

卷号：52

期号：5

起止页码：410

中文期刊名：化工学报

外文期刊名：CIESC Journal

收录：CSTPCD;;Scopus;北大核心:【北大核心2000】；CSCD:【CSCD2011_2012】；

基金：上海石油化工研究院资助项目

语种：中文

中文关键词：等温积分反应器;考评装置;不均匀分布;宏观反应动力学;活性组分分布;颗粒催化剂;催化活性

外文关键词：Acetic acid;Acetylation;Catalysts;Ethylene

摘要：设计了颗粒催化剂实验室筛选及考评装置 ,给出了活性组分分布在催化剂外表层的环柱状气相乙烯氧乙酰化合成醋酸乙烯催化剂的考评实例 .通过无梯度反应器研究了该催化剂的宏观反应动力学 ,采用反应 -传热模型对气相乙烯氧乙酰化合成醋酸乙烯多重反应进行了模拟计算 .实验和模拟计算结果吻合 ,表明所采用的装量 30ml微型积分反应器 ,当催化剂与惰性载体的稀释比为 1∶2时 ,可实现床层内等温操作 ,用于筛选活性组分分布在环柱状载体外表层催化剂 。
An evaluation and screening device for granular catalyst is designed, and an example of acetoxidation of ethylene in gas phase on hollow cylindrical catalyst with active constituent maldistributed on the outside and inside surface is given.In this example, the reactor is designed as 'U' shape, and five thermocouples are set to measure the axial temperature profile of the catalyst bed. The global kinetics equation is studied in a CSTR. It is found that the kinetics parameters of split catalyst is the same as the full granular catalyst, so the active constituent distribution remains unchanged with the catalyst split into uniform small pieces.The reaction-heat transfer models are applied to the multiple reactions net of gas phase acetoxidation of ethylene to synthesis of vinyl acetate. The results of model simulation and experimental data indicate that 30 mL catalyst bed in 1:2 dilution ratio (catalyst: inert carrier) is appropriate, it practically achieves isothermal operation inside the bed and presents good comparable results for screening and evaluating hollow cylindrical catalyst with active constituent maldistribution.